Deprecated macro usage for connected line, redirecting, and CCSS

This commit adds GoSub alternatives to connected line, redirecting, and CCSS
macro hooks so that macro can finally be deprecated.  This also adds
deprecation warnings for those features when used and in documentation.

Review: https://reviewboard.asterisk.org/r/1760/
(closes issue SWP-4256)


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@357013 65c4cc65-6c06-0410-ace0-fbb531ad65f3

UPGRADE.txt

@@ -35,6 +35,11 @@ res_ais:
 Dialplan Functions:
  - MAILBOX_EXISTS has been deprecated. Use VM_INFO with the 'exists' parameter
    instead.
+ - Macro has been deprecated in favor of GoSub.  For redirecting and connected
+   line purposes use the following variables instead of their macro equivalents:
+   REDIRECTING_SEND_SUB, REDIRECTING_SEND_SUB_ARGS,
+   CONNECTED_LINE_SEND_SUB, CONNECTED_LINE_SEND_SUB_ARGS.
+
 
 func_enum:
  - ENUM query functions now return a count of -1 on lookup error to
@@ -62,6 +67,10 @@ AMI:
   - DBDelTree now correctly returns an error when 0 rows are deleted just as
     the DBDel action does.
 
+CCSS:
+ - Macro is deprecated. Use cc_callback_sub instead of cc_callback_macro
+   in channel configurations.
+
 app_meetme:
   - The 'c' option (announce user count) will now work even if the 'q' (quiet)
     option is enabled.